Headphone



FIG. 1 is a perspective view of a headphone showing a first embodiment of our new design;

FIG. 2 is a front side view of the headphone shown in FIG. 1;

FIG. 3 is a back side view of the headphone shown in FIG. 1;

FIG. 4 is a left side view of the headphone shown in FIG. 1;

FIG. 5 is a right side view of the headphone shown in FIG. 1;

FIG. 6 is a top view of the headphone shown in FIG. 1; and,

FIG. 7 is a bottom view of the headphone shown in FIG. 1.

The broken lines in FIGS. 1-7 are for environmental purposes only and do not form any part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 